MONACO (AP) Jared Donaldson ranted at the chair umpire over a line call during his 6-3, 6-3 loss to Albert Ramos-Vinolas in the first round of the Monte Carlo Masters on Monday.

The 21-year-old American got irate with a call when Ramos-Vinolas was serving at 3-2, 40-0 in the second set. Donaldson thought the serve was out and pointed to the ground, shouting, "There's a mark right here," and then screaming the same words inches from the face of French chair umpire Arnaud Gabas.

He then squared up to Gabas and shouted: "Yes it is, yeah it is," as he insisted his mark was right and the umpire's call of in was wrong.